Trait Tuple4Map0Option 

pub trait Tuple4Map0Option<T0, T1, T2, T3> {
    // Required method
    fn map0<U>(self, f: impl FnOnce(T0) -> U) -> Option<(U, T1, T2, T3)>;
}

Mapping .0 for Tuple4

Required Methods

fn map0<U>(self, f: impl FnOnce(T0) -> U) -> Option<(U, T1, T2, T3)>

Mapping .0 for Tuple4

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T0, T1, T2, T3> Tuple4Map0Option<T0, T1, T2, T3> for Option<(T0, T1, T2, T3)>

fn map0<U>(self, f: impl FnOnce(T0) -> U) -> Option<(U, T1, T2, T3)>

Implementors